Coast Guard crews have suspended the search for two fishermen reported missing near the mouth of Brazos River in Freeport, officials said Sunday.

A bystander called 911 about 2:30 p.m. Saturday when he saw two wade fishermen go underwater, an agency spokesman said Sunday. The agency searched by boat and helicopter. Two volunteer search groups, Gulf Coast Rescue Squad and Texas Equusearch, also helped.

The fishermen are presumed drowned, Texas Equusearch officials said Sunday. They identified the two as Sam Lavan, 40, and Trai Nguyen, 48. The group plans to resume searching for the two on Monday.

In other incidents, the Coast Guard helped rescued four people Sunday from a sinking boat near Sea Wolf Park in Galveston. They waved down a fisherman, who called 911. As the rescue crew arrived, one of the four boaters had jumped out of the sinking boat and swam to a buoy. A helicopter located the man and rescued him.

About 5:47 p.m. Saturday, the Coast Guard helped five people whose boat was disabled near Sabine jetties. A Coast Guard boat crew got to them before they hit the jetties, then towed them to safety at the Sabine public boat ramp.